Simulation Analysis on the Jet Flow Field of a Single Nozzle Spraying for a Large Ship Outer Panel Coating Robot

A mathematical model of the cavity flow fan nozzle, a jet atomisation, and simplified physical equivalent entity are established. simulation spraying at different pressures is carried out using 0.48 calibre nozzle as case study, compared with experimental data; error results between 4.3% 7.5% indicate means used reliable valid. The include effective to further explore evaluation index atomisation characteristics; in critical Weber number on impact atomised particles, analysis diameter particles speed movement, determining number; effect, for pressure particle diameter, kinetic energy, deposition rate, liquid film growth, etc. show that, existing high-pressure airless equipment within range permissible 6~16 MPa, increase pressure, better effect paint, adhesion rate overall effect.